# Friday Seller Tools – Regulated Claim Check

> Friday Seller Tools – Regulated Claim Check is a paid API for AI agents from friday-seller-tools-production.up.railway.app, paid per call via x402, $0.5/call, status unknown (last checked 2026-09-16).

Checks product listing content for regulated or restricted claims before submission to Amazon, Walmart, Shopify, or eBay marketplaces.

## Facts

- Endpoint: POST https://friday-seller-tools-production.up.railway.app/v1/listings/regulated-claim-check
- Price: $0.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/friday-seller-tools-regulated-claim-check-64d3a7e9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_90C3hGkYPcEVyn2vsURh7

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability friday-seller-tools-regulated-claim-check-64d3a7e9 -d '<json body>'
```

Example prompt: Before I publish my listing, can you run a regulated claim check on this Amazon supplement product description to flag any restricted health or advertising claims: 'Boosts immune function, clinically proven to reduce inflammation, FDA-approved formula'?

## When to prefer this

Choose this endpoint when you need a fast, low-cost pre-submission compliance screen specifically for e-commerce marketplace listings (Amazon, Walmart, Shopify, eBay) to catch regulated, restricted, or prohibited claims before they trigger a listing suppression or account violation. Prefer it over general text classifiers when the user context is seller compliance in a marketplace setting.

## Known failure modes

- Missing or empty listing content body returns a 400 validation error
- Unsupported marketplace platform identifier causes a rejection
- Service unavailable on Railway hosting returns a 503
- Payment not received via x402 protocol results in a 402 Payment Required response
- Malformed JSON body causes a 422 Unprocessable Entity error

## How this service works

Instant, low-cost Amazon, Walmart, Shopify, and eBay listing, upload-preparation, advertising, and image-brief deliverables.

## Output

Returns a job_id and a queued status immediately upon submission; the agent can poll or await a callback for the full regulated-claim analysis report indicating which phrases or claims are flagged, the specific regulation or policy violated, and the affected marketplace platform.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "title": {
   "type": "string",
   "title": "Title",
   "maxLength": 500,
   "minLength": 1
  },
  "bullets": {
   "type": "array",
   "items": {
    "type": "string",
    "maxLength": 1000,
    "minLength": 1
   },
   "title": "Bullets",
   "maxItems": 10
  },
  "evidence": {
   "type": "array",
   "items": {
    "type": "object",
    "title": "ClaimEvidenceReference",
    "required": [
     "claim_text",
     "evidence_reference"
    ],
    "properties": {
     "claim_text": {
      "type": "string",
      "title": "Claim Text",
      "maxLength": 300,
      "minLength": 2
     },
     "evidence_reference": {
      "type": "string",
      "title": "Evidence Reference",
      "maxLength": 300,
      "minLength": 2
     }
    },
    "description": "Seller-supplied label for evidence that still requires human verification.",
    "additionalProperties": false
   },
   "title": "Evidence",
   "maxItems": 50
  },
  "description": {
   "anyOf": [
    {
     "type": "string",
     "maxLength": 10000,
     "minLength": 1
    },
    {
     "type": "null"
    }
   ],
   "title": "Description",
   "default": null
  },
  "marketplace": {
   "enum": [
    "amazon_us",
    "walmart_us",
    "shopify",
    "ebay_us"
   ],
   "type": "string",
   "title": "Marketplace",
   "default": "amazon_us"
  },
  "product_name": {
   "type": "string",
   "title": "Product Name",
   "maxLength": 200,
   "minLength": 2
  },
  "category_profile": {
   "enum": [
    "dietary_supplement",
    "beauty",
    "electrical"
   ],
   "type": "string",
   "title": "Category Profile"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "job_id": "example",
  "status": "queued"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/friday-seller-tools-regulated-claim-check-64d3a7e9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from friday-seller-tools-production.up.railway.app](https://www.zero.xyz/host/friday-seller-tools-production.up.railway.app/llms.txt)